fix equations in docstrings

Author: stevengj

src/svd.jl

@@ -280,9 +280,9 @@ end
 """
     ldiv!(F::SVD, B; atol::Real=0, rtol::Real=atol>0 ? 0 : n*ϵ)
 
-Given the SVD `F` of an $m \\times n$ matrix, multiply the first $m$ rows of `B` in-place
-by the Moore-Penrose pseudoinverse, storing the result in the first $n$ rows of `B`, returning `B`.
-This is equivalent to a least-squares solution (for $m \\ge n$) or a minimum-norm solution (for $m \\le n$).
+Given the SVD `F` of an ``m \\times n`` matrix, multiply the first ``m`` rows of `B` in-place
+by the Moore-Penrose pseudoinverse, storing the result in the first ``n`` rows of `B`, returning `B`.
+This is equivalent to a least-squares solution (for ``m \\ge n``) or a minimum-norm solution (for ``m \\le n``).
 
 Similar to the [`pinv`](@ref) function, the solution can be regularized by truncating the SVD,
 dropping any singular values less than `max(atol, rtol*σ₁)` where `σ₁` is the largest singular value.